1950's Vintage Indonesian Ivory Clip Earrings

1950's Vintage Indonesian Ivory Clip Earrings. These earrings have been in our family since my Grandmother brought them back from Indonesia in the 1950's. My Mother may have worn these once. They have been in a jewelry box. In excellent condition . No clips or cracks. They measure slightly over 1" long. I'm not sure of the metal. I believe it is gold with some patina. I have not cleaned, due to the earrings being made of Ivory. I looked it up and it said to clean with lemon juice. Real ivory does yellow as it ages. These are a beautiful Ivory/Beige color.